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93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include <map>
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#include <string>
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#include <vector>
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namespace Metastream
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{
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class DataCache;
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// Currently supported HTTP methods
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enum class HttpMethod
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{
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GET
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};
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typedef struct
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{
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HttpMethod method;
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std::map<std::string, std::string> headers;
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std::string uri;
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std::map<std::string, std::string> query;
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std::string body;
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} HttpRequest;
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typedef struct
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{
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int code;
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std::map<std::string, std::string> headers;
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std::string body;
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} HttpResponse;
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class BaseHttpServer
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{
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public:
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BaseHttpServer(const DataCache* cache)
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: m_cache(cache)
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{
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}
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virtual ~BaseHttpServer() {}
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// Start the HTTP server with the given options
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virtual bool Start(const std::string & civetOptions) = 0;
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// Stop the HTTP Server
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virtual void Stop() = 0;
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// Return a JSON list of all data tables that are exposed.
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HttpResponse GetDataTables() const;
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// Return a JSON list of all data keys that are exposed for a specific table.
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HttpResponse GetDataKeys(const std::string& tableName) const;
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// Return a JSON object containing a particular value.
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HttpResponse GetDataValue(const std::string& tableName, const std::string& key) const;
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// Return a JSON object containing a set of values.
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HttpResponse GetDataValues(const std::string& tableName, const std::vector<std::string>& keys) const;
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//---------------------------------------------------------------------
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// Helper functions
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// Split query into key-value pairs
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static std::map<std::string, std::string> TokenizeQuery(const char* queryString);
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// simple string substitution
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static std::string StrReplace(std::string srcString, const std::string & query, const std::string & replacement);
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// Split a query value if it is a comma separated list (e.g. key=value1,value2,...)
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static std::vector<std::string> SplitValueList(const std::string& value, char separator);
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// Serialize header name-value pairs into a string for writing back to response
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static std::string SerializeHeaders(const std::map<std::string, std::string>& headers);
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// Prepare HTTP status for writing back to response (e.g. "HTTP/1.1 200 OK")
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static std::string HttpStatus(int code);
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private:
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const DataCache* m_cache;
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};
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} // namespace Metastream
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